I'm going to upgrade my graphics card from a HD 5570 to a HD 6850. And I'm wondering what would be the best way to remove my graphics drivers for my HD 5570 so it doesn't conflict with my HD 6850. Thanks.
More about :proper thourough uninstall graphics card drivers
It is not really a requirement if you're staying with AMD (ATI) , just download and install the latest drivers for your card and OS from the AMD site and you'll be fine.
If you do decide to play it safe and use Drivercleaner or similar software be sure to check what it is going to clean, it has been known for these programs to delete system files!